Sudan has accused Israel of carrying out missile strikes against a military factory that killed two people in Khartoum overnight and threatened retaliatory action.
"We think Israel did the bombing," culture and information minister Ahmed Bilal Osman told a news conference. "We reserve the right to react at a place and time we choose."
Israel's military and foreign ministry, which has long accused Khartoum of serving as a base for militants from the Palestinian Islamist group Hamas, refused to comment.
Osman said four radar-evading aircraft conducted an attack at around midnight on the Yarmouk military manufacturing facility in the south of the Sudanese capital.
Evidence pointing to Israel was found among remnants of the explosives, he said.
Residents of the area said an aircraft or missile flew over the facility shortly before the plant burst into flames.
"I heard a sound like a plane in the sky, but I didn't see any light from a plane. Then I heard two explosions, and fire erupted in the compound," said a local who asked to be identified as Faize.
A woman living south of the compound also reported two initial blasts.
The fires were extinguished three hours after they began.